Spectral analysis of acoustic emission signals generated by twinning and shear band formation in silver single crystals subjected to channel-die compression tests
In the paper there are presented the results of investigations of the relations between acoustic emission (AE) and the mechanisms of twinning as well as shear band formation and propagation in silver single crystals of $\{112\}$ orientation, subjected to channel-die compression tests at ambient t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
2014-01-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1328 |
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| Summary: | In the paper there are presented the results of investigations of the relations between acoustic
emission (AE) and the mechanisms of twinning as well as shear band formation and propagation
in silver single crystals of $\{112\}$ orientation, subjected to channel-die compression
tests at ambient temperature. The results were obtained using an AE analyzer of a new
generation, installed recently at the Institute of Metallurgy and Materials Sciences, and were
compared with those obtained also for single Ag crystals of the same orientation, tested at the
room and at liquid nitrogen (−196$^{\circ}$C) temperatures, but registered applying an AE analyzer
of older generation, used until now. The results of AE measurements obtained using the new
analyzer allowed to plot the acoustograms produced with the application ofWindowed Fourier
Transform method for analysis of large experimental data sets (4$\times$132 Msamples). This allowed
the authors to solve the problem of identification of the strain mechanisms leading to
formation of different dislocation systems. |
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| ISSN: | 0137-5075 2300-262X |